Pulley for tractors



Jan; I2 ,1926;`

6MM/knew H. FORD PULLSY FOR TRAGTOBS Filed latch 26,` 1919 VPatented Jan. 12, 1926.

'HENRY rezan; or Dnaaisomn MICHIGAN.

PULLEY Foa raac'roas.

To all whom'z'tma concern.'

Be it known that HENRY FORD, a citizen vof the United States of Ai'nerica, residin at Dearborn, in the .county of Wayne an State of Michigan, have invented certain new and useful Improvements in Pulleys for Tractors, of which the following is a s eciication, reference being had therein to tlie accompanying drawings.

tor includes a power transmission shaft and a beveled gear wheel, both of which have ,utilized for operating a pulley exteriorly of' the transmission `housing and said pulley employed for operatino` farm machinery while the tractor is stationary.

This application is directed to -the construction of a supporting bearing .for the pulley and the manner of installing the bearing. The supporting bearing is in the form of an attac ment that may be easily and quickly installed when work is to be erformed with the tractor stationary, or it may remain as a part of the tractor during field operation, so that the ulley may be used somewhat as a winch s ould occasion require. Provision is also made so that the the pulley removed and a ca or closure plate substituted therefor.l Suc a constructive arrangement of parts will be herein-v after referred to and reference will now be had to the drawing, wherein there is shown a longitudinal nsectional view of the pulley bearing attachment.

As identifying the location of the pulley attachment now in use on tractors, there is illustrated a portion of a transmission housing which includes a wall 1 provided with an opening 2 and adjacent the marginal edges of said opening there are a lurality of interiorly screwthreaded openings 3. The openings 3 accommodate screw bolts 4 and these bolts are adapted #to retain the peripheral flange 26 of a hollow and somewhat c lindrical bearing `5 in engagement with tlie wall of the transmission ousing. The screw bolts 4 may also be utilized for retaining a cap or closure plate The transmission mechanism of my trac` ulley bearing 'may remain a fixture relative to the transmission housing and' Applicatio'nled March 28, 1919. Serial No. 285,255.

over the opening 2 when the bearing l5 is not in lace.

The` caring 5 is disposed concentrically l of the opening 2` with the greater part thereof protruding from said opening and rthe inner end of said bearing terminates in a crown or bell end 6 supporting an antifrictional bearing 7 preferably of the ball type. 'llie outer end of the bearing 5 terminates in a crown or bell end 8 somewhat larger than the bell end 6 and this outer end lof the bearing su ports an anti-frictional ybearing 9, also o the ball type. The bearing 9 cooperates with the bearing 7 in supporting a pulley shaft l() longitudinally of the bearing 5, said ulley 'shaft being gradually stepped iii dliameter from the inner end thereof to the outer end. On'

the inner. end o-f the pulle shaft is a beveled gear wheel 11 mes ing with a beveled gear wheel 12 mounted on a power transmission shaft 13, said beveled gear wheel 12 of the shaft 13 having been heretofore referred to as part of the transmission mechanism disclosed. in my pending application VSerial No. 227,222.

he outer end of the pulley shaft 10 Ais formed to permit of a pulley hub 14 being detachably mounted thereon, and, as shown, the pulley hub may be held for rotation with the pulley shaft by splines, keys or similar" fastening means associated with a nut 15.

The pulley and its hub 'may be of any well known type, but as illustrating a preferred form there is an outer pulley part which provides clearance for the wall 19 and also provides an inner rim 2O surrounding the outer rim of the bearing 5. The

. periphery of the rim 20 is formed to support a laminated pulley body 23, which is abricated from a pluralit ofl closely assembled flatV rings-mount on a plurality io5 l which will tend to i-ncrease the longevity of a belt or other power transmission member trained over thel pulley. In constructing the laminations for the pulley bod it is also.

possiblerto shape the periphery .o each ring or lamination so as to provide a pulley periphery of desired contour, for instancesomewhat convex as shown.

The outerkend of the bearing 5 may be provided with interiorly screwthreaded sockets 27 and'when the pulley, per se, is removed, the outer end of the bearing 5 may be closed by a cap 'or closure plate (not shown). The inner,l end of the bearing 5, contiguous to the flange 26 has openings 28 so that the lubricant from the transmis'- sion housing may enter the bearing 5 and lubricate the bearings 7 and 9 therein, or the pulle attachment may be"lubricated by any Well Known system of lubrication.

What I claim is In a pulley attachment for a tractor for- Ward of the rear axle assembly and inde- 30 pendent thereof, which tractor, includesa transmission housing containing a power take-ofi'l gear in spaced relation to the housing wall, anda pulley adapted to be supported outside of the housing and driven by a shaft from said power take-oil' gear, a bearing casing vfor said shaft solely supported from said transmission housing, said bearing casing having an intermediate peripheral flange attached to said housing wall and long and short portions with the short portionv extending into the housing and provided With lubricant receiving openings adjacent said fiange, and the long portion of said bearing casing protruding from the housing wall,'the long portion of saidl casing being proportioned so that any torsion of said shaft 1s transmitted to the ends of saidfbearing casing and from there to said housing to prevent binding at said take-oil` gear', anti-frictionalbearings in the extreme ends ofsaid l.bearing casing, said bearing casing and said anti-frictional bearings solely supporting said shaft and affording a lubricant chamber communicating with the interior of said transmission housing by virtue of the openings in said bearingv casing ad'acent said flange. Y

vln testimony whereof I aiiix my signature.

HENRY FORD. 

